By the patch notes' wording, I was thinking the bosses that were mentioned were the only bosses that were changed. Apparently not. Viscidus is way easier than many here seem to think. There's no need to reforge into haste, bring special potions and whatnot. Viscidus requires 20 frost attacks to freeze him and
15 attacks in 15 seconds to shatter him (
source). If you go kitty you would in other words be able to shatter him only through auto-attack.
I never did solo Twin Emperors, but their healing was reduced, so 16k DPS is all you need in order to beat the enrage timer now. I'm not sure what the DPS requirement was before, but they healed for 30k every second. I imagine that they were easy at level 90, so I don't really think this was needed.
Regarding Razorgore, what is changed about him?